Springfield Lakes, Massive Ground Cracks, Subsidence and Wall Cracks
This property in Springfield Lakes has massive ground cracks & subsidence. The property's front yard looked like a landslip, leaving the owner concerned that the block and house were unstable. Fortunately, the property manager contacted Forensic Engineers to thoroughly investigate and report on the land and house.
We determined the extent of the damage, the cause and the necessary steps to stabilize and repair the peoperty
๐๐๐๐จ ๐๐จ ๐ฎ๐ป ๐ฒ๐ ๐๐ฟ๐ฎ๐ฐ๐ ๐ณ๐ฟ๐ผ๐บ ๐ค๐ช๐ง ๐๐ฉ๐ง๐ช๐๐ฉ๐ช๐ง๐๐ก ๐๐ฃ๐๐๐ฃ๐๐๐ง ๐๐๐ฅ๐ค๐ง๐ฉ;
๐ฏ.๐ฌ ๐๐๐ก๐๐๐ก๐๐ฆ
๐ฏ.๐ญ ๐๐ ๐๐ฒ๐ฟ๐ถ๐ผ๐ฟ
โข Driveway slab cracks
โข Porch/Bed 3, garden timber retaining wall leaning toward street
โข Porch/bed 3, large fissures in surface pavement and in ground beneath
โข House perimeter some โwear & tearโ gaps in door & window frames
โข Dining wall crack
โข Living wall crack
๐ฏ.๐ฎ ๐๐ป๐๐ฒ๐ฟ๐ถ๐ผ๐ฟ
โข Garage slab cracks
โข Hallway/garage crack over door
โข Hallway/bed 3 ceiling cornice crack
๐ฐ.๐ฌ ๐๐ข๐จ๐ฆ๐ ๐๐๐ข๐ข๐ฅ ๐๐๐ฉ๐๐๐ฆ
We measured the floor levels. While we found some variations there are some variations, they are not excessive remain well within the allowed tolerances of AS 2870 appendix C.
๐ฑ.๐ฌ ๐๐ข๐จ๐ฆ๐ ๐๐ฅ๐๐๐ ๐๐๐ง๐๐๐ข๐ฅ๐๐๐ฆ
Cracks are up to category 2 in accordance with AS2870-2011 Appendix C.
๐ฒ.๐ฌ ๐๐๐จ๐ฆ๐๐ฆ
๐ฒ.๐ญ ๐ฆ๐ฒ๐๐๐น๐ฒ๐บ๐ฒ๐ป๐๐.
Our inspection indicates that estate development civil earthworks likely involved placing of landfill in some areas, particularly at the front of the block. Site works during the build may have also disturbed the platform soils,ย and the consolidation of these soils contributed to some settlements.
We expect that in areas of loose landfill, piers extending into solid natural material would support the house footings and slab. In this case the house footings experienced some (non-serious) settlements resulting in slab level variations wall cracks.
๐ฒ.๐ฎ ๐๐ฟ๐ผ๐ป๐ ๐ด๐ฎ๐ฟ๐ฑ๐ฒ๐ป ๐ด๐ฟ๐ผ๐๐ป๐ฑ ๐ณ๐ถ๐๐๐๐ฟ๐ฒ๐.
Evidence shows that landfill in this area has undergone consolidation and erosion. Additionally, a leaning timber sleeper wall allowed loose landfill to move laterally down-slope, opening ground fissures.
The surface pavement is not a conventional reinforced concrete slab; instead, it consists of coarse sand stabilized with cement. Because this material has very low tensile strength, settlements, lateral downhill movement, and ground fissures caused the material to shear.
๐ฒ.๐ฏ ๐๐ฎ๐ฟ๐ฎ๐ด๐ฒ ๐ณ๐น๐ผ๐ผ๐ฟ ๐๐น๐ฎ๐ฏ ๐ฐ๐ฟ๐ฎ๐ฐ๐ธ๐
The cracks in the garage floor slab are โplastic shrinkage cracksโ that likely originated shortly after the pour. Concrete shrinks as it cures, causing these cracks, which generally grow as the surface edges wear. They are not a serious issue.
๐ฒ.๐ฐ ๐๐ฟ๐ถ๐๐ฒ๐๐ฎ๐ ๐๐น๐ฎ๐ฏ ๐ฐ๐ฟ๐ฎ๐ฐ๐ธ๐
The driveway slab developed โplastic shrinkage cracks,โ which concreting practices likely exacerbated. These practices include inadequate base support due to landfill, excessive tensile steel top cover, placing concrete in hot or windy weather, and poor or inadequate slab control joints.
๐ณ.๐ฌ ๐ฅ๐๐๐ข๐ ๐ ๐๐ก๐๐๐ง๐๐ข๐ก๐ฆ
๐ณ.๐ญ ๐๐ฟ๐ถ๐ฒ๐ณ
The house footings and slab show no evidence of instability. We can effectively stabilize the ground next to the porch and bedroom 3.
๐ณ.๐ฎ ๐ฅ๐ฒ๐๐ถ๐ป ๐๐ป๐ท๐ฒ๐ฐ๐๐ถ๐ผ๐ป ๐๐ฟ๐ผ๐๐ป๐ฑ ๐ฆ๐๐ฎ๐ฏ๐ถ๐น๐ถ๐๐ฎ๐๐ถ๐ผ๐ป
Correctly applied Polyurethane Resin Injection effectively densifies and binds founding soils and fills voids and fissures. The contractor must apply this process throughout and to the full depth of the loose landfill.
The contractor is responsible for providing adequate services and results. We advise you to carefully consider the contractorโs warranty terms regarding achievable results, any possible requirements for future additional treatment, and any associated costs.
Suitable Contractor:
RAISE & RELEVEL, Damon Letters Ph: 1300 520 903
๐ณ.๐ฏ ๐ข๐๐ต๐ฒ๐ฟ ๐ฟ๐ฒ๐ฝ๐ฎ๐ถ๐ฟ๐
โข Once the contractor stabilizes the base material, they can replace the existing cement-stabilized sand pavement with a conventional slab pavement.
โข Rake out, fill, and paint house internal plasterboard cracks. We advise using fibre-glass tape.
โข Garage floor cracks do not require repair.
โข Filling driveway cracks will likely not be durable.
๐ฆ๐จ๐ ๐ ๐๐ฅ๐ฌ
We found that settlements and erosion of poor-quality, low-density landfill caused the cracks and voids in the ground. Some material also migrated down-slope.
Fortunately, these issues did not affect the house, which remains stable. The repairs are uncomplicated and cost-effective.
The property owner was onsite during our inspection and felt incredibly relieved.
โข Expert Structural Engineer Reports
โข Subsidence Investigation Experts
โข Wall Crack Investigation Specialists
Real Estate Agents, Property Managers, Strata Managers, and Property Owners rely on our industry expertise.
COOMERA WATERS SUBSIDENCE DAMAGE
SUBSIDENCE, WALL CRACKS, STRUCTURAL ENGINEER REPORT.
Home owners, buyers and sellers with house subsidence or wall crack problems
An expert RPEQ Engineer subsidence Report from Forensic Engineers generally costs between $650 - $900 ex GST. (local service area only). Forย peace-of-mind, contact Forensic Engineers for an expert, independent Structural Engineer Report.
๐๐๐ฟ๐๐๐๐๐๐๐๐ ๐ผ๐๐๐ผ๐๐๐๐๐ ๐๐๐๐๐๐๐๐ ๐๐๐๐๐๐๐ ๐๐๐ ๐๐๐?
Some underpinners offer to arrange a report from their own engineer. It might seem like an easy option, but, Tฬฒhฬฒeฬฒ cฬฒฬฒoฬฒsฬฒtฬฒ iฬฒฬฒsฬฒ cฬฒฬฒoฬฒnฬฒsฬฒiฬฒdฬฒeฬฒrฬฒaฬฒbฬฒlฬฒyฬฒ mฬฒฬฒoฬฒrฬฒeฬฒ tฬฒฬฒhฬฒaฬฒnฬฒ fฬฒoฬฒrฬฒeฬฒnฬฒsฬฒiฬฒcฬฒ eฬฒnฬฒgฬฒiฬฒnฬฒeฬฒeฬฒrฬฒsฬฒ. Aฬฒnฬฒdฬฒ tฬฒฬฒhฬฒeฬฒrฬฒeฬฒ iฬฒฬฒsฬฒ aฬฒฬฒ hฬฒฬฒuฬฒgฬฒeฬฒ cฬฒฬฒoฬฒnฬฒfฬฒlฬฒiฬฒcฬฒtฬฒ oฬฒฬฒfฬฒ iฬฒฬฒnฬฒtฬฒeฬฒrฬฒeฬฒsฬฒtฬฒ. Forensic Engineers reports are 100% independent. We are not working for, or paid by any underpinner and we are certainly not trying to sell you any type of underpinning.
๐๐ผ๐๐ ๐๐ ๐๐
Before committing to any type of underpinning, for peace-of-mind, contact us at Forensic Engineers for a chat and an independent opinion. If underpinning is necessary, then we also strongly advise sending your own independant Engineer Report to two or three underpinning companies for quotes before making a decision.
Forensic Engineers..When subsidence problems arise, we're on your side!
Engineer Reports for Wall Cracks & Subsidence - What Do I get?
๐ ๐ง๐๐ฝ๐ถ๐ฐ๐ฎ๐น ๐๐ฎ๐๐ฒ, ๐๐ผ๐๐๐ฒ ๐๐ผ๐ฟ ๐ฆ๐ฎ๐น๐ฒ; ๐ฆ๐ฝ๐ฟ๐ถ๐ป๐ด๐ณ๐ถ๐ฒ๐น๐ฑ ๐๐ฎ๐ธ๐ฒ๐
The building & Pest Report had identified a few small brick wall cracks & some slope in the floor that did not appear to be too serious, but just to be safe, he recommended that the buyer contacted Forensic Engineers to do an inspection and report.
๐๐๐๐จ ๐๐จ ๐๐ฃ ๐๐ญ๐ฉ๐ง๐๐๐ฉ ๐๐ง๐ค๐ข ๐ค๐ช๐ง ๐๐ฉ๐ง๐ช๐๐ฉ๐ช๐ง๐๐ก ๐๐ฃ๐๐๐ฃ๐๐๐ง ๐๐๐ฅ๐ค๐ง๐ฉ ๐๐ฃ ๐ฉ๐๐๐จ ๐๐๐จ๐;
๐ฏ.๐ญ ๐๐ ๐๐ฒ๐ฟ๐ถ๐ผ๐ฟ
- Left side wall โbendingโ
- Bed 1 front wall, partial rendering done
- Garage left entry gap
- Bath wall cracks & window reveal gap
- Bed 3 wall cracks & window reveal gap
- Kitchen wall crack
- Rear patio column lean
- Rear patio slab settlements of the rear-left corner & cracks
- Dining/living wall corner crack filled
- Living window reveal gap
- West wall window reveal gaps filled
- Living wall crack
- Bed 2 wall cracks under sill
- Bed 2/garage wall corner crack filled
- Garage rear wall crack over door
- Widespread variations in mortar shades
๐ฏ.๐ฎ ๐๐ป๐๐ฒ๐ฟ๐ถ๐ผ๐ฟ
- Garage floor slab cracks & west edge slab dampness
- Hallway/toilet ceiling cornice cracks
- Hallway/bed 2 ceiling cornice crack
- Living window architrave tension gaps
๐ฐ.๐ฌ ๐๐๐ข๐ข๐ฅ ๐๐๐ฉ๐๐๐ฆ
*Test locations are approximate. Carpet & underlay depths varied from room to room & carpet wear affected readings.
The findings show that there have been differential settlements of the house slab. Specifically, there is visible bending of the left wall, caused by settlements of the rear and front-left corner.
๐ฑ.๐ฌ ๐๐๐จ๐ฆ๐๐ฆ
๐ฑ.๐ญ ๐ฆ๐ถ๐๐ฒ ๐๐ผ๐ฟ๐ธ๐.
In this case, it is likely that original estate development civil works resulted in placement of loose landfill on sections of the block. It is apparent that consolidation of soft/loose soils under some areas of the slab have caused settlements, floor level variations and damages.
Ground movements, and particularly differential settlements have caused the slab level variations and the damages identified.
๐ฒ.๐ฌ ๐ฅ๐๐๐ข๐ ๐ ๐๐ก๐๐๐ง๐๐ข๐ก๐ฆ
๐ฒ.๐ญ ๐๐ฟ๐ถ๐ฒ๐ณ
The floor level variations and house damages have been caused by ground movements - particularly differential settlements. There is no urgency to do so, but assurance of stability and some reasonable correction of floor level variations would require some underpinning.
๐ฒ.๐ฎ ๐จ๐ป๐ฑ๐ฒ๐ฟ๐ฝ๐ถ๐ป๐ป๐ถ๐ป๐ด
We have illustrated the approximate underpinning locations (see yellow highlights on sketch), subject to the design engineerโs input.
We estimate that conventional underpinning utilizing reinforced concrete piers & headstocks would involve approximately 15 underpins.
A reasonable industry rate for underpinning would be approximately $2,500 - $3,500 per underpin location, but this may vary, subject to engineerโs design.
Establishment & general repair & clean-up costs also apply
๐ฒ.๐ฏ ๐จ๐ป๐ฑ๐ฒ๐ฟ๐ฝ๐ถ๐ป๐ป๐ถ๐ป๐ด ๐๐ผ๐ป๐๐ฟ๐ฎ๐ฐ๐๐ผ๐ฟ๐
Underpinning Contractors should be well established Registered Repair Builders who do all of the repairs and do not use subcontractors for any repair work;
๐ฒ.๐ฐ ๐ง๐๐ฝ๐ฒ๐ ๐ผ๐ณ ๐จ๐ป๐ฑ๐ฒ๐ฟ๐ฝ๐ถ๐ป๐ป๐ถ๐ป๐ด
As advised...
๐๐๐ง๐จ๐ฉ ๐๐ข๐ฅ๐ง๐๐จ๐จ๐๐ค๐ฃ๐จ ๐ค๐๐ฉ๐๐ฃ ๐ก๐๐
The impression was that the house had undergone some subsidence and had some "normal" wall cracks, and it looked like it was not serious.
But our thorough investigation found that the house was not stable at all, and ongoing settlements were causing the house slab to bend in the long direction (front-to back). And it was getting worse.
๐๐บ๐ฎ๐ด๐ถ๐ป๐ฒ ๐ถ๐ณ ๐๐ผ๐ ๐๐ฒ๐ฟ๐ฒ ๐ฎ ๐ต๐ผ๐บ๐ฒ ๐ฏ๐๐๐ฒ๐ฟ ๐ฎ๐ป๐ฑ ๐ฎ๐ณ๐๐ฒ๐ฟ ๐บ๐ผ๐๐ถ๐ป๐ด ๐ถ๐ป, ๐๐ผ๐ ๐ณ๐ผ๐๐ป๐ฑ ๐๐ต๐ฎ๐ ๐๐ต๐ฒ ๐ณ๐น๐ผ๐ผ๐ฟ ๐๐ฎ๐ ๐๐ถ๐ป๐ธ๐ถ๐ป๐ด ๐ฎ๐ป๐ฑ ๐๐ฎ๐น๐น ๐ฐ๐ฟ๐ฎ๐ฐ๐ธ๐ ๐๐ฒ๐ฟ๐ฒ ๐ด๐ฒ๐๐๐ถ๐ป๐ด ๐๐ผ๐ฟ๐๐ฒ ๐ฎ๐ป๐ฑ ๐๐ผ๐ฟ๐๐ฒ!
๐๐ญ๐ฅ๐๐ง๐๐๐ฃ๐๐๐ & ๐๐๐ค๐ง๐ค๐ช๐๐
Our subsidence investigations call on decades of soil testing experience. And we meticulously examine the building for gaps and cracks.
๐๐ก๐ค๐ค๐ง ๐ก๐๐ซ๐๐ก ๐๐ช๐ง๐ซ๐๐ฎ โ ๐๐๐ง๐ฎ ๐๐ข๐ฅ๐ค๐ง๐ฉ๐๐ฃ๐ฉ!
We always take a floor level survey which is Absolutely Essential for any subsidence and wall crack investigation.
Any respectable engineer subsidence report has to include a floor level survey. Without it, it is impossible to identify and interpret footing and slab movements and particularly, the severity and influence of house damages.
๐๐๐ฟ๐๐๐๐๐๐๐๐ ๐ผ๐๐๐ผ๐๐๐๐๐ ๐๐๐๐๐๐๐๐ ๐๐๐๐๐๐๐ ๐๐๐ ๐๐๐?
Some underpinners offer to arrange a report from their own engineer. Tฬฒhฬฒeฬฒ cฬฒฬฒoฬฒsฬฒtฬฒ iฬฒฬฒsฬฒ cฬฒฬฒoฬฒnฬฒsฬฒiฬฒdฬฒeฬฒrฬฒaฬฒbฬฒlฬฒyฬฒ mฬฒฬฒoฬฒrฬฒeฬฒ tฬฒฬฒhฬฒaฬฒnฬฒ fฬฒoฬฒrฬฒeฬฒnฬฒsฬฒiฬฒcฬฒ eฬฒnฬฒgฬฒiฬฒnฬฒeฬฒeฬฒrฬฒsฬฒ - at least $1,000 more!! Aฬฒnฬฒdฬฒ tฬฒฬฒhฬฒeฬฒrฬฒeฬฒ iฬฒฬฒsฬฒ aฬฒฬฒ hฬฒฬฒuฬฒgฬฒeฬฒ cฬฒฬฒoฬฒnฬฒfฬฒlฬฒiฬฒcฬฒtฬฒ oฬฒฬฒfฬฒ iฬฒฬฒnฬฒtฬฒeฬฒrฬฒeฬฒsฬฒtฬฒ.
Forensic Engineers RPEQ reports are affordable and 100% independent. We are not working for, or paid by an underpinner.
And we are certainly not trying to sell you any type of underpinning.
๐๐ผ๐๐ ๐๐ ๐๐
Before committing to any type of underpinning, for peace-of-mind, contact us at Forensic Engineers for a chat and an independent opinion. We also strongly advise sending your own independant Engineer Report to at least three underpinning companies for quotes before making a decision.
Strata and Body Corp RPEQ Engineer Reports, Wall Cracks, Subsidence, Underpinning
๐๐ผ๐ฑ๐ ๐๐ผ๐ฟ๐ฝ & ๐ฆ๐๐ฟ๐ฎ๐๐ฎ ๐๐ป๐ด๐ถ๐ป๐ฒ๐ฒ๐ฟ ๐ฅ๐ฒ๐ฝ๐ผ๐ฟ๐ ๐ฆ๐ฝ๐ฒ๐ฐ๐ถ๐ฎ๐น๐ถ๐๐๐!
In this recent case, the Body Corp called us in to investigate and report on this townhouse with subsidence and wall cracks and gaps that were getting worse and worse.
It turned out that other engineers had previously looked at the building and had decided that subsidence had occurred in the past and had stopped and and the damages were not serious and could be patched and painted. Sadly, they were wrong.
CALL FORENSIC ENGINEERS!
Forensic Engineers has decades of Soil Testing & Geotechnincal experience. And becsue of that, we identified that the townhouse was actually located on ๐น๐ผ๐ผ๐๐ฒ ๐น๐ฎ๐ป๐ฑ๐ณ๐ถ๐น๐น that was gradually ๐๐๐ฏ๐๐ถ๐ฑ๐ถ๐ป๐ด, bit-by-bit, year after year. And stabilization with ๐๐ป๐ฑ๐ฒ๐ฟ๐ฝ๐ถ๐ป๐ป๐ถ๐ป๐ด ๐๐ฎ๐ ๐๐ต๐ฒ ๐๐ผ๐น๐๐๐ถ๐ผ๐ป.
In this case, Resin / Chemical Underpinning was not considered appropriate and Steel Screw piers would be far too expensive and unnecessary.
The most reliable and cost effective method was with conventional underpinning using reinforced concrete piers and head-stocks.
๐๐ผ๐ฟ๐ฒ๐ป๐๐ถ๐ฐ ๐๐ป๐ด๐ถ๐ป๐ฒ๐ฒ๐ฟ๐ ๐ฎ๐ฟ๐ฒ ๐๐ต๐ฒ ๐๐ผ๐ฑ๐ ๐๐ผ๐ฟ๐ฝ & ๐ฆ๐๐ฟ๐ฎ๐๐ฎ ๐ฆ๐ฝ๐ฒ๐ฐ๐ถ๐ฎ๐น๐ถ๐๐๐.
- Our service is first class
- Quotes in hours
- Decades of soil testing experience
- Inspections and reports in days not weeks.
- Very competitive rates.
- REPQ engineer reports
O๐๐ฟ ๐ฏ๐ฟ๐ถ๐น๐น๐ถ๐ฎ๐ป๐ RPEQ ๐ฆ๐๐ฟ๐๐ฐ๐๐๐ฟ๐ฎ๐น ๐๐ป๐ด๐ถ๐ป๐ฒ๐ฒ๐ฟ ๐ฅ๐ฒ๐ฝ๐ผ๐ฟ๐๐ ๐ฎ๐ฟ๐ฒ ๐ฎ๐ณ๐ณ๐ผ๐ฟ๐ฑ๐ฎ๐ฏ๐น๐ฒ, ๐ฎ๐ฐ๐ฐ๐๐ฟ๐ฎ๐๐ฒ, ๐ฒ๐ฎ๐๐ ๐๐ผ ๐๐ป๐ฑ๐ฒ๐ฟ๐๐๐ฎ๐ป๐ฑ ๐ฎ๐ป๐ฑ ๐ญ๐ฌ๐ฌ% ๐ถ๐ป๐ฑ๐ฒ๐ฝ๐ฒ๐ป๐ฑ๐ฒ๐ป๐.
Do I Need a Structural Engineer Report? Absolutely!
๐ฃ๐ถ๐บ๐ฝ๐ฎ๐บ๐ฎ ๐ต๐ผ๐๐๐ฒ โ ๐ฌ๐๐ฎ ๐๐จ ๐ข๐ฎ ๐๐ก๐ค๐ค๐ง ๐๐ค๐ช๐ฃ๐๐๐ฃ๐?
๐๐ฒ๐ฒ๐ฏ๐ถ๐ป๐ด ๐๐ฒ๐ถ๐ด๐ต๐๐ ๐ต๐ผ๐๐๐ฒ โ ๐ฉ๐๐ ๐๐ง๐๐๐ ๐ข๐ค๐ง๐ฉ๐๐ง ๐๐จ ๐๐๐ก๐ก๐๐ฃ๐ ๐ค๐ช๐ฉ!!
๐๐ผ๐ผ๐บ๐ฒ๐ฟ๐ฎ ๐ต๐ผ๐๐๐ฒ โ ๐๐๐๐ฉ ๐๐จ ๐ฉ๐๐๐จ ๐ช๐ฃ๐๐๐ง ๐ฉ๐๐ ๐จ๐ก๐๐??
๐๐ผ๐น๐น๐ถ๐ป๐ด๐๐ผ๐ผ๐ฑ ๐ฃ๐ฎ๐ฟ๐ธ ๐ต๐ผ๐๐๐ฒ โ ๐ฝ๐ค๐ฎ-๐ค๐-๐๐ค๐ฎ โ ๐พ๐๐ก๐ก ๐๐ค๐ง๐๐ฃ๐จ๐๐ ๐๐ฃ๐๐๐ฃ๐๐๐ง๐จ!!!
SINK HOLES IN TAIGUM, HOUSE SETTLEMENTS IN KURABY & SUBSIDENCE IN MERMAID WATERS
๐ ๐ช๐จ๐ฉ ๐ ๐ฉ๐ฎ๐ฅ๐๐๐๐ก ๐๐๐ฎ ๐๐ค๐ง ๐๐ค๐ง๐๐ฃ๐จ๐๐ ๐๐ฃ๐๐๐ฃ๐๐๐ง๐จ.
๐ง๐ฎ๐ถ๐ด๐๐บ ๐๐ฎ๐๐ฒ - ๐ณ๐ผ๐ฟ ๐๐ต๐ฒ ๐ฆ๐๐ฟ๐ฎ๐๐ฎ ๐ ๐ฎ๐ป๐ฎ๐ด๐ฒ๐ฟ๐.
A broken water pipe created a large sinkhole under a townhouse driveway. Residents feared the driveway would collapse or further damage would appear. Fortunately, our expert investigation revealed that the slab remained intact and the damage was localized. We recommended filling the hole and re-supporting the driveway slab using either Polyurethane Resin Injection or hyflow cementitious grout ("Mud-Jacking").
๐ง๐ต๐ฒ ๐๐๐ฟ๐ฎ๐ฏ๐ ๐๐ฎ๐๐ฒ - ๐ณ๐ผ๐ฟ ๐๐ต๐ฒ ๐ฃ๐ฟ๐ผ๐ฝ๐ฒ๐ฟ๐๐ ๐ ๐ฎ๐ป๐ฎ๐ด๐ฒ๐ฟ.
This older house suffered serious movement in the perimeter footings and floor stumps. Highly plastic clay soils common in Kuraby cause footings to lift, settle, and often "rotate" (lean). Because the footings moved so significantly, the timber floor became unstable. We recommended vacating the house, followed by comprehensive re-stumping and replacement of the perimeter base and footings.
๐ ๐ฒ๐ฟ๐บ๐ฎ๐ถ๐ฑ ๐ช๐ฎ๐๐ฒ๐ฟ๐ - ๐ถ๐ป๐๐ฒ๐๐๐ถ๐ด๐ฎ๐๐ฒ๐ฑ ๐ณ๐ผ๐ฟ ๐๐ต๐ฒ ๐ฃ๐ฟ๐ผ๐ฝ๐ฒ๐ฟ๐๐ ๐ข๐๐ป๐ฒ๐ฟ.
The townhouse complex sits on compressible landfill that has settled slowly for decades. We identified recent cracks, gaps, and serious variations in floor levels caused by active settlement of the founding materials. After considering several stabilization methods, we determined that conventional underpinningโpossibly incorporating steel screw piers in areas with a water tableโis the only reliable solution.
๐๐ ๐ฝ๐ฒ๐ฟ๐ ๐ฆ๐๐ฟ๐๐ฐ๐๐๐ฟ๐ฎ๐น ๐๐ป๐ด๐ถ๐ป๐ฒ๐ฒ๐ฟ ๐ฅ๐ฒ๐ฝ๐ผ๐ฟ๐๐ ๐ณ๐ผ๐ฟ ๐ฆ๐๐ฟ๐ฎ๐๐ฎ ๐ ๐ฎ๐ป๐ฎ๐ด๐ฒ๐ฟ๐, ๐ฃ๐ฟ๐ผ๐ฝ๐ฒ๐ฟ๐๐ ๐ข๐๐ป๐ฒ๐ฟ๐ & ๐ฃ๐ฟ๐ผ๐ฝ๐ฒ๐ฟ๐๐ ๐ ๐ฎ๐ป๐ฎ๐ด๐ฒ๐ฟ๐
Own, Buying or Selling a House with Cracks?
Wall, ceiling or floor cracks & gaps?
Expert Structural Engineer Reports
Peace-of-Mind
Subsidence & Wall Cracks: Underpinning Free Home Assessment was Wrong
Home Owner Saved Thousands on Underpinning
Structural Engineer Underpinning Report:
Thinking of underpinning? Contact us for an Expert Structural Engineer Report.
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Renovating a House with Subsidence and Wall Cracks
๐๐๐ฃ๐ ๐ฉ๐๐ ๐พ๐๐ช๐จ๐
It's really important to find the actual cause of the cracks, so that any repairs will last and cracks don't re-appear again and again.
๐๐ญ๐ฅ๐๐ง๐ฉ ๐๐ฃ๐๐๐ฃ๐๐๐ง ๐๐๐ฅ๐ค๐ง๐ฉ
That's why the owner of this Carindale house called Forensic Engineers to prepare an expert Structural Engineer Report.
Our expert investigation found old and recent subsidence & cracks, and footing settlements as well as footing rotation (leaning). We also identified that the house was built on an old gully that had been filled in and the landfill was subsiding bit-by-bit, year-after-year and this was causing the house cracks.
๐๐๐๐ฉ ๐ฉ๐ค ๐๐ค ๐๐๐ญ๐ฉ
Our expert Structural Engineer Report found that Stabilizing the footings and permanent wall crack repair would require underpinning of most of the house footings with conventional underpinning.
๐๐ค๐ง๐๐ฃ๐จ๐๐ ๐๐ฃ๐๐๐ฃ๐๐๐ง๐จ ๐๐ง๐ ๐๐๐ง๐ ๐ฉ๐ค ๐๐๐ก๐ฅ
Home renovations are expensive, so if there are any worrying wall or ceiling cracks, it's really important to make sure the foundations are stable by getting an expert independent Engineer Subsidence Report from Forensic Engineers from the get-go